JPH0173826U - - Google Patents
Info
- Publication number
- JPH0173826U JPH0173826U JP1987169375U JP16937587U JPH0173826U JP H0173826 U JPH0173826 U JP H0173826U JP 1987169375 U JP1987169375 U JP 1987169375U JP 16937587 U JP16937587 U JP 16937587U JP H0173826 U JPH0173826 U JP H0173826U
- Authority
- JP
- Japan
- Prior art keywords
- filter
- movable
- holder
- freedom
- degree
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010586 diagram Methods 0.000 description 2
Description
第１図ａ，ｂは本考案の一実施例を示す側面図
および正面図、第２図ａ，ｂは本考案の他の実施
例を示す側面図および正面図、第３図ａ〜ｃは本
考案の原理説明図、第４図ａ，ｂは従来の一例を
示す側面図および正面図、第５図ａ，ｂおよび第
８図ａ，ｂは従来の他の例を示す側面図および正
面図、第６図、第７図は可変光量ＮＤフイルタの
フイルタ部分を示す説明図、第９図ａ〜ｃは従来
のＮＤフイルタのフイルタ部分を示す説明図であ
る。
１……可動ＮＤフイルタ、２……固定ＮＤフイ
ルタ、３……ホルダ、４……光、５……リニアガ
イド、６……ＮＤフイルタ、７……ガイド、８…
…ガイド、９……ＮＤフイルタ、１０……ＮＤフ
イルタ、１１……ラツク、１２……ラツク、１３
……ピニオン。
Figures 1a and b are side and front views showing one embodiment of the invention, Figures 2a and b are side and front views showing another embodiment of the invention, and Figures 3a to c are Figures 4a and 4b are side views and front views showing a conventional example; Figures 5a and 8a and b are side views and front views showing other conventional examples. 6 and 7 are explanatory diagrams showing a filter portion of a variable light amount ND filter, and FIGS. 9 a to 9 c are explanatory diagrams showing a filter portion of a conventional ND filter. 1...Movable ND filter, 2...Fixed ND filter, 3...Holder, 4...Light, 5...Linear guide, 6...ND filter, 7...Guide, 8...
...Guide, 9...ND filter, 10...ND filter, 11...Rack, 12...Rack, 13
...Pinion.
Claims (1)
つてつながり濃度が可動方向に対し直線的に変化
し、一定の勾配をもつ可動ＮＤフイルタと、前記
ホルダーに固定され、光量調節の対象にされてい
る光の通路中に前記可動ＮＤフイルタと直列的に
配列され、濃度が前記可動ＮＤフイルタの可動方
向に対し直線的に変化し一定の勾配をもち、前記
可動ＮＤフイルタと濃度の勾配の量は同じで逆勾
配となつている固定ＮＤフイルタとを含むことを
特徴とする可変光量ＮＤフイルタ。 (2) ホルダーと可動ＮＤフイルタ間の自由度が
回転である実用新案登録請求の範囲第１項に記載
の可変光量ＮＤフイルタ。 (3) ホルダーと可動ＮＤフイルタ間の自由度が
直線運動である実用新案登録請求の範囲第１項に
記載の可変光量ＮＤフイルタ。[Claims for Utility Model Registration] (1) A holder, a movable ND filter that is connected to the holder with one degree of freedom and whose density changes linearly with respect to the direction of movement and has a constant gradient, and that is fixed to the holder. The movable ND filter is arranged in series with the movable ND filter in the path of light that is subject to light intensity adjustment, and the density changes linearly with respect to the movable direction of the movable ND filter and has a constant gradient, and the movable ND filter A variable light amount ND filter comprising an ND filter and a fixed ND filter having the same density gradient but opposite gradient. (2) The variable light intensity ND filter according to claim 1, wherein the degree of freedom between the holder and the movable ND filter is rotation. (3) The variable light intensity ND filter according to claim 1, wherein the degree of freedom between the holder and the movable ND filter is linear motion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987169375U JPH0173826U (en) | 1987-11-04 | 1987-11-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987169375U JPH0173826U (en) | 1987-11-04 | 1987-11-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0173826U true JPH0173826U (en) | 1989-05-18 |
Family
ID=31459375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987169375U Pending JPH0173826U (en) | 1987-11-04 | 1987-11-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0173826U (en) |
-
1987
- 1987-11-04 JP JP1987169375U patent/JPH0173826U/ja active Pending
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